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  <title>Document</title>
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  <script>
    var num = 11
    // num++
    // num++

    // num += 2  // num = num + 2 
    // num /= 2  // num = num / 2 
    // num *= 2  // num = num * 2 
    // num %= 2  // num = num % 2 

    console.log(num)
  </script>
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